Analysis of Digital Radio Frequency Memory Signals in Radar Receivers

This work analyzes the digital radio frequency memory (DRFM) signals from their emission to the various phases of a radar receiver. In this study, three DRFM parameters are modified: the number of bits, the random jitter and the sampling rate. The figure of merit analyzed is the signal-tonoise ratio (SNR) of the DRFM signal after the matched filter, MTI and MTD stages of a surveillance radar. It is concluded that the most influential factor is the DRFM sampling rate. The other parameters and its interactions have little or no influence on the scenario analyzed.